Anionic Hydrogen‐Bonded Frameworks Showing Tautomerism and Colorful Luminescence for the Ultrasensitive Detection of Acetone DOI
Shuaiqi Wang, Jun Liu,

Shangwei Feng

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(13)

Published: Feb. 7, 2024

Abstract Tautomers coexisting in an equilibrium system have significant potential for regulating luminescent properties because of their structural differences. However, separating and stabilizing tautomers at room temperature is a considerable challenge. In this study, it found that hydrogen‐bonded organic frameworks (HOFs) composed Br ‐ anions can effectively separate stabilize two proton‐transfer triarylformamidinium bromide: namely, the nitrogen cation (BA‐N) carbon (BA‐C). The BA‐N crystal consisting dense anionic HOF parallelly aligned cations exhibits green thermally activated delayed fluorescence red room‐temperature phosphorescence (RTP). BA‐C contains acetone molecules induce antiparallel arrangement to form loose HOF, producing blue prompt RTP. Interestingly, switching HOFs between be achieved through uptake release acetone, thereby dynamically adjusting multiple properties. Consequently, crystals used highly sensitive specific sensing with detection limit 66.74 ppm. This study not only stabilizes tautomeric materials temperature, but also provides new method constructing smart response stimulus.

Language: Английский

Macroscopic Assembly of Chiral Hydrogen‐bonded Metal‐free Supramolecular Glasses for Enhanced Color‐tunable Ultralong Room Temperature Phosphorescence DOI Open Access

Fei Nie,

Dongpeng Yan

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(28)

Published: May 12, 2023

Glassy materials, with desirable mechanical rigidity, shaping ability, high transparency, are attracting great interest in diverse fields. However, optically bulk molecule-based glasses still rare, mainly due to limited monomeric species and harsh preparation conditions. Herein, we report a facile bottom-up solution fabrication process obtain metal-free supramolecular (SMGs) at the macroscopic scale using L-Histidine hexamethylenetetramine as building blocks. The chiral SMGs possess color-tunable ultralong room temperature phosphorescence (decay lifetime up 141.2 ms) circular polarized luminescence (g factor 8.7×10-3 ). strong hydrogen bonds effectively drive formation of SMGs, provide rigid microenvironment boost triplet exciton generation. By virtue excitation- temperature-dependent applications including multicolored displays, visual UV detection, persistently luminescent thermometer demonstrated.

Language: Английский

Citations

88
Ultralow‐loss Optical Waveguides through Balancing Deep‐Blue TADF and Orange Room Temperature Phosphorescence in Hybrid Antimony Halide Microstructures DOI Open Access
Bo Zhou, Zhenhong Qi,

Meiqi Dai

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(39)

Published: Aug. 14, 2023

Harnessing the potential of thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) is crucial for developing light-emitting diodes (LEDs), lasers, sensors, many others. However, effective strategies in this domain are still relatively scarce. This study presents a new approach to achieving highly efficient deep-blue TADF (with PLQY 25 %) low-energy orange RTP 90 through fabrication lead-free hybrid halides. class monomeric dimeric 0D antimony halides can be facilely synthesized using bottom-up solution process, requiring only few seconds minutes, which offer exceptional stability nontoxicity. By leveraging adaptable molecular arrangement crystal packing modes, demonstrate ability self-assemble into regular 1D microrod 2D microplate morphologies. self-assembly facilitated by multiple non-covalent interactions between inorganic cores organic shells. Notably, these microstructures exhibit outstanding polarized luminescence function as low-dimensional optical waveguides with remarkably low optical-loss coefficients. Therefore, work not pioneering demonstration halides, but also introduces micro/nanostructures that hold promising applications white LEDs photonic systems.

Language: Английский

Citations

85
Room-temperature phosphorescent materials derived from natural resources DOI
Xiongfei Luo, Bing Tian, Yingxiang Zhai

et al.

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(11), P. 800 - 812

Published: Sept. 25, 2023

Language: Английский

Citations

62
Zero-dimensional halide hybrid bulk glass exhibiting reversible photochromic ultralong phosphorescence DOI Creative Commons

Fei Nie,

Dongpeng Yan

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 29, 2024

Dynamically responsive materials, capable of reversible changes in color appearance and/or photoemission upon external stimuli, have attracted substantial attention across various fields. This study presents an effective approach wherein switchable modulation photochromism and ultralong phosphorescence can be achieved simultaneously a zero-dimensional organic-inorganic halide hybrid glass doped with 4,4´-bipyridine. The facile fabrication large-scale glasses is accomplished through combined grinding-melting-quenching process. persistent luminescence regulated the photochromic switch induced by photo-generated radicals. Furthermore, incorporation aggregation-induced chirality effect generates intriguing circularly polarized luminescence, optical dissymmetry factor (g

Language: Английский

Citations

60
Glassy inorganic-organic hybrid materials for photonic applications DOI
Bo Zhou, Dongpeng Yan

Matter, Journal Year: 2024, Volume and Issue: 7(6), P. 1950 - 1976

Published: April 26, 2024

Language: Английский

Citations

50
A flexible ligand and halogen engineering enable one phosphor-based full-color persistent luminescence in hybrid perovskitoids DOI Creative Commons
Guowei Xiao, Yu‐Juan Ma, Zhenhong Qi

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(10), P. 3625 - 3632

Published: Jan. 1, 2024

Color-tunable room temperature phosphorescent (RTP) materials have raised wide interest due to their potential application in the fields of encryption and anti-counterfeiting. Herein, a series CdX

Language: Английский

Citations

48
Visible Light‐Activated Ultralong‐Lived Triplet Excitons of Carbon Dots for White‐Light Manipulated Anti‐Counterfeiting DOI Open Access
Bin Xu, Yuehan Jia,

Huiying Ning

et al.

Small, Journal Year: 2023, Volume and Issue: 20(1)

Published: Aug. 30, 2023

Abstract Room temperature phosphorescence (RTP) has emerged as an interesting but rare phenomenon with multiple potential applications in anti‐counterfeiting, optoelectronic devices, and biosensing. Nevertheless, the pursuit of ultralong lifetimes RTP under visible light excitation presents a significant challenge. Here, new phosphorescent materials that can be excited by record‐long are demonstrated, realized through embedding nitrogen doped carbon dots (N‐CDs) into poly(vinyl alcohol) (PVA) film. The lifetime N‐CDs@PVA film is remarkably extended to 2.1 s 420 nm, representing highest recorded value for light‐excited materials. Theoretical experimental studies reveal robust hydrogen bonding interactions effectively reduce non‐radiative decay rate radiative transition triplet excitons, thus dramatically prolong lifetime. Notably, emission also activated easily accessible low‐power white‐light‐emitting diode. More significantly, practical state‐of‐the‐art anti‐counterfeiting security optical information storage domains further demonstrated. This research offers exciting opportunities utilizing light‐activated ultralong‐lived systems wide range promising applications.

Language: Английский

Citations

45
Organic–Inorganic Hybrid Glasses of Atomically Precise Nanoclusters DOI Creative Commons
Chunwei Dong, Xin Song, Bashir E. Hasanov

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(11), P. 7373 - 7385

Published: March 4, 2024

Organic–inorganic atomically precise nanoclusters provide indispensable building blocks for establishing structure–property links in hybrid condensed matter. However, robust glasses of ligand-protected nanocluster solids have yet to be demonstrated. Herein, we show [Cu4I4(PR3)4] cubane coordinated by phosphine ligands (PR3) form melt-quenched air with reversible crystal–liquid–glass transitions. Protective critically influence the glass formation mechanism, modulating glasses' physical properties. A utilizing ethyldiphenylphosphine-based nanoclusters, [Cu4I4(PPh2Et)4], exhibits superb optical properties, including >90% transmission both visible and near-infrared wavelengths, negligible self-absorption, near-unity quantum yield, high light yield. Experimental theoretical analyses demonstrate structural integrity [Cu4I4(PPh2Et)4] nanocluster, i.e., iodine-bridged tetranuclear cubane, has been fully preserved state. The strong internanocluster CH−π interactions found subsequently reduced vibration account its enhanced luminescence Moreover, this highly transparent enables performant X-ray imaging low-loss waveguiding fibers drawn above transition. discovery "nanocluster glass" opens avenues unraveling mechanisms designing novel luminescent well-defined advanced photonics.

Language: Английский

Citations

34
Encapsulation engineering of porous crystalline frameworks for delayed luminescence and circularly polarized luminescence DOI

Xiaoyan Lu,

Kun Zhang,

Xinkai Niu

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(13), P. 6694 - 6734

Published: Jan. 1, 2024

Delayed luminescence (DF), including phosphorescence and thermally activated delayed fluorescence (TADF), circularly polarized (CPL) exhibit common broad application prospects in optoelectronic displays, biological imaging, encryption. Thus, the combination of is attracting increasing attention. The encapsulation guest emitters various host matrices to form host-guest systems has been demonstrated be an appealing strategy further enhance and/or modulate their luminescence. Compared with conventional liquid crystals, polymers, supramolecular matrices, porous crystalline frameworks (PCFs) metal-organic (MOFs), covalent-organic (COFs), zeolites hydrogen-bonded organic (HOFs) can not only overcome shortcomings such as flexibility disorder but also achieve ordered guests long-term stability chiral structures, providing new promising platforms for development DF CPL. In this review, we provide a comprehensive critical summary recent progress photochemistry

Language: Английский

Citations

31
Enabling robust blue circularly polarized organic afterglow through self-confining isolated chiral chromophore DOI Creative Commons
Mingjian Zeng, Wei‐Guang Wang, Shuman Zhang

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 9, 2024

Abstract Creating circularly polarized organic afterglow system with elevated triplet energy levels, suppressed non-radiative transitions, and effective chirality, which are three critical prerequisites for achieving blue afterglow, has posed a formidable challenge. Herein, straightforward approach is unveiled to attain materials by covalently self-confining isolated chiral chromophore within polymer matrix. The formation of robust hydrogen bonds the matrix confers distinctly stabilized molecular state chromophores, endowing emission band at 414 nm, lifetime 3.0 s, luminescent dissymmetry factor ~ 10 −2 . Utilizing synergistic chirality transfer, full-color systems endowed doping colorful fluorescent molecules into designed polymers, empowering versatile applications. This work paves way streamlined design materials, expanding horizons various domains.

Language: Английский

Citations

30